How To Fix Car Amplifier Clipping (Step by Step)

Enjoying your favorite while driving will make your trip shorter and much more relaxing. But the clipping sound may ruin this terrific experience. 

How do you repair amplifier clipping? The step-by-step instructions in this guide will be what you need to address this problem. Let’s follow them! 

How Do I Know If My Amplifier Is Clipping? 

Clipping is a wave distortion that generally happens when an amplifier gets overdriven or attempts to produce a power supply voltage higher than its capacity. 

Imagine the audio signal as a sine wave, whose peaks and troughs should be smooth. Sometimes, the peaks rise when a car amplifier’s gain increases to a degree the speakers can’t tolerate. This symptom will result in a clipped signal.

If your amp clips, it will sound like the speakers are giving up on a specific frequency. There are loud bursts mixed with notes, loud pops, and distorted sounds. Occasionally there is just a short rise, and other times it plays music as usual. 

The clipping won’t last long. You will feel that you are close to the perfect spot, but you must pull things down a little bit to reach it. All these things ruin your flawless sine wave and then the sound quality.

How to fix car amplifier clipping? You need to detect distortion

How To Fix When Amplifier Clipping? 

There are several reasons why a car amplifier may clip. Along with the reasons, we’ve also included solutions that might help you fix your car audio amp clipping. 

Step 1: Check the power supply  

Too much power delivered to the speakers might lead to excessive magnet pressure and woofer stress. Subwoofers will suffer internal damage, and the amp may clip.

The additional power can easily blow a fuse or harm the loudspeaker and amp’s power source. The tweeter of a connected loudspeaker may become overheated due to the increased high-frequency energy in the harmonies created by a clipping amp. 

If your amplifier is clipping, you may need to adjust the gain to fit the input voltage. The best way to fix this problem is to match your car amp’s RMS power with your subwoofers’ RMS power. 

It would be best to install the amplifier with a corresponding RMS power with the existing subwoofers first. Check for how much power it can handle too. 

The goal of this method is to match the input signal with the output signal. Once you can balance them, the risk of clipping will be minimal. 

Step 2: Fix the grounding 

A car amplifier with poor grounding may clip because it doesn’t receive what it needs. In this case, there is no other choice but to work at a lower volume and drop the sound. 

The bad grounding also interrupts the input signal and output signal paths. When the sound waves don’t travel to the head unit correctly, they will clip the signals and destroy the sound the amplifier delivers. 

So, please note that the grounding connection of your car amplifier to the head unit and other components is crucial. You should always examine the integrity of all the connections. 

Many people use the negative battery for the ground, but it’s a terrible position. The battery may invite all the noise and ruin the sound rippling across this point. 

Step 3: Check for signs of overheating.

Another significant factor for the car amp to clip is overheating. Sound cuts may occur when the amp is overheated, or the speaker wire is loose. 

You should be aware that playing audio at high volumes for a long period causes car amplifiers to emit high heat. Sometimes poor wiring leads to overheating. You may have connected the speakers or any separate wires incorrectly. 

We have many electrical gadgets that sometimes heat up while working. Thus, there is no such issue when car amplifiers generate some heat. 

However, you must be aware that excessive heat can be destructive to the car amplifier and your automobile since it can destroy the amp and possibly spark a fire.

To solve this problem, you must understand how airflow works when you mount the amp. Ventilation plays a key role in keeping the device cool and preventing a sudden cutoff. 

Examine the car audio system’s installation and wiring as well. Take your vehicle in for service if you can’t spot any issues with the electrical installation.

Check for signs of overheating in the system


The clipped signal in your car audio system destroys your music-listening experience. So once you detect a harmonic distortion in the sound, check for the cause and take immediate action. 

Hopefully, this guide can help you eliminate clipped signals in your car amplifiers. If you need any further information about harmonic distortion, please comment. We will reply to you soon. 

Thank you for reading! 

This video will show you some tips for properly grounding your car amplifier:


What is clipping?

Clipping is when the audio signal is boosted over the maximum permitted level. This symptom happens in both digital and analog devices. The waveform will look like a clipping pattern instead of the usual sine wave, hence the name. 

Will clipping damage an amplifier?

Yes. Because clipping occurs due to an overdriven amp, the electronics may get overheated. If the problem persists, the heat will harm internal components and destroy them. A weak amplifier will suffer much more. 

Can a blown sub cause clipping?

Yes. Blown subwoofers are one of the leading causes of amplifier clipping in a car stereo. It undoubtedly occurs when the waveform’s different peaks cause the subwoofer to vibrate less than usual.